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ZIMSEC O Level Combined Science Notes:Contraception:Ways to prevent pregnancy
- Spermicides are sperm killing chemicals
How it works
- Are usually in the form of jelly cream placed into the vagina before sexual intercourse
- The chemical kills spermatozoa
Effectiveness
- 60-95%
Advantages
- Does not require a prescription
- Does not need medical supervision
- There are few side effects
- Easy to use
- Improves effectiveness of condoms/diaphragm as well as other methods of contraception
Disadvantages
- High failure rate if it is used on its own
- Used with every sex act
- Is often a messy affair
- Must be applied at least 3 minutes before sex but not more than 30 minutes before sex. This takes the spontaneous aspect of sex off the table
Side effects
- Can cause irritation/allergy to the penis/vagina in some people
To access more topics go to the Combined Science Notes page
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